Search for dissertations about: "k-.epsilon"
Showing result 1 - 5 of 24 swedish dissertations containing the word k-.epsilon.
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1. Numerical Simulation of Turbulent Flows for Turbine Blade Heat Transfer Applications
Abstract : Turbine blade heat transfer is an important engineering problem characterized by complex flow fields and high turbulence levels. This thesis is focused on using a full Navier-Stokes solver with two-equation eddy-viscosity models to predict external heat-transfer in single-stage, linear, two-dimensional uncooled turbine cascades. READ MORE
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2. The Full Multigrid Method Applied to Turbulent Flow in Ventilated Enclosures Using Structured and Unstructured Grids
Abstract : Computational fluid dynamics require large computer resources and it is thus of paramount interest to have as efficient an algorithm as possible. This means that both an accurate discretization and a fast solver are required. In this work, we have used the full multigrid concept, which is a general and optimal solver. READ MORE
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3. Modeling Variable Density and Radiation Effects in Turbulent Flames with Fast Chemistry
Abstract : The thesis focuses on the less known, but important, aspects of turbulent combustion, namely the variable density and radiation effects. A fundamental discussion of the basic physical phenomena involved in the pressure-density interactions is provided. Current modeling approaches are discussed and simple modifications of the k - .epsilon. READ MORE
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4. CFD Simulation of Jet in Asymmetric Co-flows in a Down-scaled Rotary Kiln Model
Abstract : Rotary kilns are industrial furnaces that have been widely used in limestone calcination, cement industry and hazardous waste incineration for centuries. In this work a rotary kiln used for the iron ore pellet sintering process in the grate-kiln pelletizing system has been studied. READ MORE
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5. Application of Numerical Aerothermal Models on Jet Engine Combustors
Abstract : The use of numerical simulations with combustion for predicting the flow field in a gas turbine combustor or afterburner may reduce the required time in the development process. To investigate the performance of numerical simulation codes some different combustor geometries was studied. READ MORE